An upper-level low pressure system currently over West Virginia will transfer its energy to the coastal storm that is currently strengthening off of the Virginia coast this morning. Periods of light to moderate snow are likely to continue through the evening before tapering off from west to east between 7pm (Blue Ridge) and Midnight (Chesapeake Bay).
Future-Cast Radar Simulations:
A burst of moderate to heavy snow is possible this afternoon as a deformation band (stretching of the atmosphere aloft due to surface convergence, causing parcels of air to rapidly rise inducing heavy precipitation) may form, sliding south and east through the metropolitan area. Snowfall rates may briefly reach one inch per hour if this meso-scale deformation band does indeed develop as some of the short-range High Resolution Rapid Refresh (HRRR) future cast radar simulations (above) indicate.
Potential Additional Accumulations through this evening:
An additional 2 to 4 inches of snow may fall across the Washington Metropolitan Area through this evening. Whether we see the higher totals will really depend on if the deformation band actually forms. *The map below updates every single hour (HRRR- High Resolution RAPID Refresh), so take an individual run with a grain of salt.
Click here for the National Weather Service’s Snowfall Reports page and pay closer attention to the accumulations sent in from “Trained-Spotters”.